i like to show up at the dollar store with no bills smaller than $20 and watch as the cashier looks at me in horror.
"is that the smallest bill you have?"
"why, yes, i'm afraid it is."
"no 10's? no 5's?"
"afraid not. all 20's, 50's and 100's in here."
makes me feel like such a high roller, and eliminates the poor feeling i had when i walked into the store.